PE 4 - Venn Diagram | LR - Venn Diagram
Answer the next 2 questions based on the information given below.
Abdul, Mala and Chetan went bird watching. Each of them saw one bird that none of the others did. Each pair saw one bird that the third did not. And one bird was seen by all three. Of the birds Abdul saw, two were yellow. Of the birds Mala saw, three were yellow. Of the birds Chetan saw, four were yellow.
How many yellow birds were seen in all?
Each of them alone saw 1 bird.
Each pair saw 1 bird which the third did not see.
All three of them saw 1 bird.
Chetan saw 4 yellow birds, hence all 4 birds that Chetan saw were yellow.
Abdul saw only 2 yellow birds while Mala saw 3 yellow birds. Hence, the third yellow bird which Mala saw was seen by Mala alone.
There are a total of 5 yellow birds.
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